Liam Hemsworth threw up during 'Hunger Games' training

Liam Hemsworth has revealed that his workouts for The Hunger Games were crippling.

The 22-year-old opened up about the intense regimen, which led him to lose 20 pounds in the month leading up to shooting the record-breaking movie.

"Training for The Hunger Games, I literally had to wait a half hour after each session before I drove anywhere," Hemsworth told Men's Health. "I had to lay on the ground until I could breathe properly again."

He went on to confess that the workouts even caused him to vomit.

"One day toward the end of the workout I went really white in the face, went over to the trash can, and did a little chuck-up," Hemsworth said. "It was mostly just water. I hadn't eaten all day."

Finally, the actor spoke about the diet he followed for the film, which consisted of lean protein, fruit and vegetables.

"It was tough, because I'm an eater," he said. "If I have one addiction in life, it's probably food."